Interesting pic

[Gary H]

From Kalitta motorsports.

Brackets to keep the header from breaking? O2 sensors?

 

[DrRocket]

From Kalitta motorsports.

Brackets to keep the header from breaking?

Yes

O2 sensors?

I think that's what the tube is, and I believe the wires are for an exhaust temp reading.

 

[Gary H]

Temp was my other guess LOL..

 

[flapjack]

Yes


I think that's what the tube is, and I believe the wires are for an exhaust temp reading.

The tube and wire are for exhaust temperature data collection. I am pretty sure the "wires" are actually fiber optic cables so that the EM field put out by the magnetos does not interfere with the signal.

 

[Turtle]

They are EGT sensors. They are usually wrapped in metal sheathing the entire length of the wires.

 

[.]

I am pretty sure the "wires" are actually fiber optic cables so that the EM field put out by the magnetos does not interfere with the signal.

I doubt they'd be fiber optic. I work with the stuff and I just don't see it being practical.

 

[flapjack]

I doubt they'd be fiber optic. I work with the stuff and I just don't see it being practical.

Yeah, you're right. I am getting this confused with something else, but I am not sure what that something else is.

 

[flapjack]

Yeah, you're right. I am getting this confused with something else, but I am not sure what that something else is.

Not sure why I thought it was fiber optic in the first place as the connections here do not have enough room for transceivers.

 

[.]

Yeah, you're right. I am getting this confused with something else, but I am not sure what that something else is.

It might be similar to a STP (shielded twisted pair) or maybe even a quad shield coax. I'd like to know out of curiosity.

 

[flapjack]

It might be similar to a STP (shielded twisted pair) or maybe even a quad shield coax. I'd like to know out of curiosity.

I meant I think fiber is used somewhere on the car, but I am not sure where.

But I am with you -- what cabling is used? It has got to have shielding given the electrical noise around one of these engines.

 

[Treeshaker]

The EGT's are just standard industrial thermocouples with a standard positive and negative wire running from each to a collection box which allows the information to be ran to the computer in one cable with 8 wires from each side of the motor.

The fiber optics are used from the pickups for the timing system to the computer.

 

[Gary H]

They are EGT sensors. They are usually wrapped in metal sheathing the entire length of the wires.

One of the reasons I posted the pic, I'm used to the covering. Also, why do some of the teams use the header brackets and some don't? You'd think the FC teams would use something with the added weight of the longer tubes.